#include<stdio.h>
#include<iostream> 
using namespace std;
int main()
{
	int x = 15, y = 10, z = 0;
	switch(x%y)
	{
		   case 0:
			z = x + y;
			break;
		   case 5:
			   z = x - y;
			  
		   case 10:
			   z = x * y;
			   break;
		   default :
			   z = x / x;
			   break;
	}
	cout << x << endl;
	cout << y << endl;
	cout << z << endl;
	return 0;
}